diff --git a/.travis.yml b/.travis.yml
index 120bc3a..9d800f1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,13 +4,15 @@ sudo: false
 
 matrix:
   include:
-    - rvm: 2.4.1
-    - rvm: 2.4.1
+    - rvm: 2.6.3
+    - rvm: 2.5.5
+    - rvm: 2.4.6
+    - rvm: 2.4.6
       script:
         - bundle exec danger
     - rvm: jruby-9.1.12.0
     - rvm: jruby-head
-    - rvm: 2.3.4
+    - rvm: 2.3.8
     - rvm: rbx-2
     - rvm: ruby-head
   allow_failures: